CVE-2001-1496

9.8
CRITICALCVSS v3.1 Base Score
4.84%
LOW RiskEPSS (92nd percentile)

Off-by-one buffer overflow in Basic Authentication in Acme Labs thttpd 1.95 through 2.20 allows remote attackers to cause a denial of service and possibly execute arbitrary code.

Published: 12/31/2001
Modified: 6/16/2026
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Vulnerability Summary

CVSS v3 Score

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

4.84%LOW Exploitation Risk
92nd percentile

This vulnerability has a 4.84% probability of being exploited in the next 30 days, ranking higher than 92% of all scored CVEs.

CWE Classification

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